STOCKHOLDERS' EQUITY (Details Textual) (USD $)	3 Months Ended			6 Months Ended						12 Months Ended		6 Months Ended
	Jun. 30, 2013 quarters	Mar. 31, 2013	Jun. 30, 2012	Jun. 30, 2013 class quarters	Jun. 30, 2012	Jun. 30, 2013 Preferred Class A [Member] Minimum [Member]	Jun. 30, 2013 Preferred Class A [Member] Maximum [Member]	Jun. 30, 2013 Preferred Class B [Member] Minimum [Member]	Jun. 30, 2013 Preferred Class B [Member] Maximum [Member]	Dec. 31, 2008 Preferred Class C [Member] U.S. Treasury's Troubled Asset Relief Program's Capital Purchase Program [Member]	Dec. 31, 2008 Preferred Class D [Member] U.S. Treasury's Troubled Asset Relief Program's Capital Purchase Program [Member]	Jun. 30, 2013 Preferred Class C & D [Member]	Jun. 30, 2013 Regularly Scheduled Dividend Payments [Member] Preferred Class C & D [Member]	Dec. 31, 2012 Regularly Scheduled Dividend Payments [Member] Preferred Class C & D [Member]	Jun. 30, 2013 Cumulative Dividends On Unpaid Regular Dividends [Member] Preferred Class C & D [Member]	Dec. 31, 2012 Cumulative Dividends On Unpaid Regular Dividends [Member] Preferred Class C & D [Member]
Class of Stock [Line Items]
Number of Classes of Preferred Stock				4
Percentage Of Preferred Stock Redeemed Par Value	105.00%			105.00%
Preferred Stock, Dividend Rate, Percentage						6.00%	12.00%	7.00%	15.00%		9.00%
Preferred stock, shares issued										295,400	14,770
Preferred Stock, Liquidation Preference Per Share										$ 1,000	$ 1,000
Preferred stock, par value (in dollars per share)										$ 1.00	$ 1.00
Preferred Stock Dividend Rate Percentage One To Five Years										5.00%
Preferred Stock Dividend Rate Percentage Year Six and Thereafter										9.00%
Preferred Stock, Dividend Payment Terms										Class C Preferred Stock carries an annual dividend rate equal to 5% for the first five years and the annual dividend rate increases to 9% per annum on and after February 15, 2014, payable quarterly in arrears beginning February 15, 2009.	Class D Preferred Stock carries an annual dividend rate equal to 9%, payable quarterly in arrears beginning February 15, 2009
Preferred stock										$ 295,400,000
Discount On Preferred Stock Accreted To Retained Earnings On Level Yield Basis												17,300,000
Preferred Stock, Period of Accretion of Discount				5 years
Accretion of discount on preferred stock	908,000		883,000	1,806,000	1,767,000
Number Of Quarterly Periods For Deferral Of Cash Dividend Payments On Preferred Stock	16			16
Dividends Payable													64,400,000	56,300,000	7,400,000	5,600,000
Reclassification of investment securities from available for sale to held to maturity		242,540,000		242,540,000	729,142,000
Gross unrealized gain on reclassification of available-for-sale securities to held-to-maturity securities		5,000,000
Gross Unrealized Gain, net of taxes, on Reclassification of Available For Sale Securities to Held To Maturity Securities		2,800,000
Deferred Tax Liability Associated with Gross Unrealized Gain on Reclassification of Available For Sale Securities to Held To Maturity Securities		$ 2,200,000